for \(F = e, \nu _e\) . For deriving the above formulas,
we refer appendix \(D\)  for more detail. We confirm that
following the zero-width approximation for
the Higgs decays in Ref. [1]},
one can arrive at the same relations.
It is
emphasized that we
take the off-shell
Higgs productions \(e^-e^+ \rightarrow ZH^*,F\bar{F} H^*\)  in
numerators of Eqs. REF ,
 rather than
on-shell Higgs productions
as in Ref. [1]}.
